I have a challenge to complete and need input from you guys:
Three domains registered as - abc.com, def.com and ghi.com belong to the same company but the businesses of all three domains are distinct and independent, very separate from each other. The emails were hosted with hosting company so there were no issues. Now the company wants to bring emails in house on its own exchange server. The new set is as below.
Existing in house functional Active directory domain for internal user's authentication and directory services:
All the users reside in this domain and there is a domain controller for that purpose.
Microsoft Exchange 2010 is installed in this domain - abc.local
MX records are changed with the service provider hosting DNS zone file.
The part where I need help is: how to configure other three domains users (which are just the mail boxes, no actual users).
I tried to add new domains in accepted domains list - okay.
When tried to create a mail box it asks to create user and only option for a user name is the ........@abc.local, the domain where the exchange server is installed.
Thanks in advance for your help....